三峡建库对上荆江航道影响的略估

On Change of Navigation Channel in Upper Jingjiang Reach after Building of Three Gorges Project

在简述三峡水库调度运用基本图形及其所引起的水沙条件变化基础上,通过略估认为,三峡建库后因枯季泄量增大及河床纵向冲刷下切,上荆江沙质河段的航道水深将会明显增加。

Firstly, the basic control scheme of the Three Gorges Reservoir and the change of the flow and sediment property due to construction of the reservoir were described in this paper. And then, it was estimated that the navigable depth in the sand bed reach of the upper Jingjiang will be increased because of the increment of the outlet during low runoff season and the longitudinal erosion in the reach after the building of the reservoir.